18
QuizMultiple Choice

The Structure of the Atom — Unit test

Question 18 • SVHS Chemistry 1 $FA

The table below shows the freezing points of four substances.SubstanceFreezing point (°C)benzene5.50water0.00butane–138nitrogen–210.The substances are placed in separate containers at room temperature, and each container is gradually cooled. Which of these substances will solidify before the temperature reaches 0°C?

Answer
A
benzene
B
water
C
butane
D
nitrogen

Explanation

A substance solidifies when it cools to its freezing point. Benzene freezes at 5.50°C, so it solidifies while the temperature is still above 0°C. Water freezes at 0°C, while butane and nitrogen freeze well below 0°C; therefore, the correct choice is benzene.

AI-written and checked against the verified answer.

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